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HT85F2250 데이터시트(PDF) 39 Page - Holtek Semiconductor Inc

부품명 HT85F2250
상세설명  A/D Flash 8051 Core Low Pin Count MCU
PDF  187 Pages
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제조업체  HOLTEK [Holtek Semiconductor Inc]
홈페이지  http://www.holtek.com
Logo HOLTEK - Holtek Semiconductor Inc

HT85F2250 데이터시트(HTML) 39 Page - Holtek Semiconductor Inc

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Rev. 1.10
�9 of 187
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A/D Flash 8051 Core Low Pin Count MCU
HT85F2250/HT85F2262
Page Erase Operation
The Flash Memory must be first unlocked before implementing a page erase procedure. The
flash memory address is setup using the control registers, FMAR0, FMAR1 and FMAR2. The
Flash Memory Page Erase function is selected by the control bit, FMCR.2, in the FMCR register.
Setting the FMCR.7 bit high will start the Page Erase procedure. When the procedure has finished,
the MCU will continue to run automatically. The following flowchart illustrates the Page Erase
procedure.
START
END
Write FMAR�
Write FMAR1
Write FMAR0
MCU waits for page-erasing finished.
Then MCU contin�es to r�n.
F�ash memor� contro��er m�st be
In �n�ocked state
FMCR Bit � = 1
This wi�� trigger page-erasing action
FMCR Bit 7 = 1
Check FMSR Bit 1 = 1
Yes
No
Page Erase Flowchart



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